what is something you guys look back on and think, what the fuck was I doing??!!!

So for me, I was 16 and it was just after Christmas when I had received a dm on instagram from a very good looking guy who I did not know, it was just the classic "hey you're goodlooking" whatever message, he let me know he was in university but never directly stated his age, I know he was older than me but as I have always been interested in older men, wasn't scared off. I told him immediately that I was 16 and he continued with "oh  you look older! Wanna text?" I agreed and after a few days he asked if he could come see me and get coffee. He lives about 45-1hr away from me. I remember being so nervous! As he picked me up I remember thinking how good looking he is and not necessarily how weird this is.. we went to some lake he said it looked like my eyes and then we went back to his car since it was so cold out and I didn't bring a coat. He began kissing me and we made out for a few hours but nothing more.. a few days later he contacted me asking if i didn't have plans for New Years if I'd like to come over. I said yes I fled town spent nearly $100 on transportation (bus then train then taxi) and then the same to return home. We went for sushi and he gave me wine we fucked and I woke up and left. I felt like it was love because I've never had anything before like this. I continued spending so much money and time sneaking away from home to a condo of a grown man I barely knew without my parents knowledge. I did this for months. It led to nothing and every time I went over it just got less exciting and weirder. I went over probably 5-6 times total. After some creeping online I found out he was 26 and that he had found me on tinder which he had never before mentioned. But looking back as I'm about to turn 18, this makes me feel sick! The fact that I, with no worries, trusted a stranger, stayed in their home, out of town far away where no one knows where I am with a man 10 years older than me. The awful things that could've happened to me?  The fact that what did happen to me happened to me and even though it was consensual, he is grown and what was he doing with a 16 year old anyways? What were the best case of his intentions? I was blind to the horrors of what could've happened. Now I realize how sick he must be and partially how sick I probably am for thinking it was ok.